Windows/Linux System Administrator Jobs

201 - 220 of 4,380 Jobs

System AdministratorJob Title - System Administrator

ManTechCompany Name - ManTech

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Maryland, USA

Full-time

ManTech is seeking a motivated, career and customer-oriented System Administrator, to join our team in Hanover, MD. The team delivers enterprise infrastructure capabilities for a global workforce performing a wide range of missions in defense of our Nation. This effort is the contract vehicle for the Enterprise Infrastructure Services organization overseeing MPO's Enterprise Information Technology (EIT). EIT is MPO's backbone- platform for all Enterprise users. Data Center & Compute Services is

Linux Systems Administrator - Oracle Cloud CertifiedJob Title - Linux Systems Administrator - Oracle Cloud Certified

ArnAmy, Inc.Company Name - ArnAmy, Inc.

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Tallahassee, Florida, USA

Contract, Third Party

Job Purpose: Installs, configures, maintains and performs system integration testing of UNIX based operating systems, related utilities and hardware. Responsible for troubleshooting UNIX-based hardware and software problems. Monitors systems activities and fine tunes system parameters and configuration to optimize performance and ensure security of systems. Performs capacity analysis, monitors and controls usage of disk space. Develops procedures for routine administration including backup/resto

System Administrator IIJob Title - System Administrator II

General DynamicsCompany Name - General Dynamics

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Annapolis, Maryland, USA

Full-time

Type of Requisition: Regular Clearance Level Must Currently Possess: Top Secret SCI + Polygraph Clearance Level Must Be Able to Obtain: Top Secret SCI + Polygraph Public Trust/Other Required: None Job Family: Systems Administration Job Qualifications: Skills: Communication, Information Systems, Operating Systems (OS), System Security, Systems Software Certifications: None Experience: 4 + years of related experience ship Required: Yes Job Description: #ITPolyMD Provide support for implemen

Linux / Unix Systems Administrator, Stf - TS/SCI w/Poly- Sunnyvale, CAJob Title - Linux / Unix Systems Administrator, Stf - TS/SCI w/Poly- Sunnyvale, CA

Lockheed Martin CorporationCompany Name - Lockheed Martin Corporation

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Sunnyvale, California, USA

Full-time

Job Description About Us: Our employees are the core of everything we do, and they are helping the future arrive. As a leading technology innovation company, our team of over 100,000 people works with partners around the world to bring proven performance to our customers' toughest challenges. Headquartered in Bethesda, MD, Lockheed Martin has employees based in all 50 states and more than 570 facilities that span more than 70 countries. This Lockheed Martin Enterprise Operations (EO) position w

System Administrator-Senior LevelJob Title - System Administrator-Senior Level

NightwingCompany Name - Nightwing

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Sterling, Virginia, USA

Full-time

Nightwing provides technically advanced full-spectrum cyber, data operations, systems integration and intelligence mission support services to meet our customers' most demanding challenges. Our capabilities include cyber space operations, cyber defense and resiliency, vulnerability research, ubiquitous technical surveillance, data intelligence, lifecycle mission enablement, and software modernization. Nightwing brings disruptive technologies, agility, and competitive offerings to customers in th

Senior IT System Administrator/System AnalystJob Title - Senior IT System Administrator/System Analyst

JacobsCompany Name - Jacobs

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Houston, Texas, USA

Full-time

Are you passionate about human space exploration, understanding the origins of the universe, and working with a passionate and diverse team to make a difference? If you are, we need you! We need your talent, teamwork, and energy to help us achieve great things that inspire people all over the globe. We need you to bring creative ideas and diverse backgrounds to help us envision, shape, and deliver systems that will enable the exploration of space while benefiting people here on Earth. We are exc

System AdministratorJob Title - System Administrator

Feuji IncCompany Name - Feuji Inc

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New York, New York, USA

Contract

Position SummaryAs a member of the infrastructure team, the System Administrator Level 2 images, configures, deploys, and maintains laptops and Horizon View virtual desktops, enterprise applications, video conferencing equipment, printers, and peripherals. The System Administrator Level 2 is skilled in configuring and troubleshooting desktops in an Omnissa Horizon View environment. Monitoring the help desk queues, the System Administrator Level 2 provides hands on Level 1 and Level 2 support a

System AdministratorJob Title - System Administrator

Robert HalfCompany Name - Robert Half

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Fort Lauderdale, Florida, USA

Full-time

Description Job Title: System Administrator Employment Type: CTH Overview: We are seeking a skilled and motivated System Administrator to join a high-performing IT team supporting a multi-site environment. This role is ideal for someone with a strong background in Windows systems administration, enterprise networking, and infrastructure support. You will play a key role in ensuring the stability, security, and scalability of a distributed IT environment that supports both office and field-based

SCITLS UNIX/Linux OS AdministratorJob Title - SCITLS UNIX/Linux OS Administrator

General DynamicsCompany Name - General Dynamics

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Offutt Air Force Base, Nebraska, USA

Full-time

Type of Requisition: Pipeline Clearance Level Must Currently Possess: Top Secret/SCI Clearance Level Must Be Able to Obtain: Top Secret/SCI Public Trust/Other Required: None Job Family: Systems Administration Job Qualifications: Skills: Computer Servers, Enterprise IT, Information Technology (IT) Systems Certifications: None Experience: 8 + years of related experience ship Required: Yes Job Description: Seize your opportunity to make a personal impact as a SCITLS UNIX/Linux OS Administra

Windows Systems AdministratorJob Title - Windows Systems Administrator

Judge Group, Inc.Company Name - Judge Group, Inc.

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Romulus, Michigan, USA

Full-time

Location: Romulus, MI Salary: $110,000.00 USD Annually - $130,000.00 USD Annually Description: Microsoft System Engineer Location: Romulus, MI Long term Contract Role (Ongoing, no end date) 100% Onsite (5 days per week) No OPT/CPT/F1 visas please We are seeking a qualified on-site Systems Engineer who will utilize their knowledge, skills, and abilities to install, manage, maintain, and troubleshoot an enterprise compute, storage, and desktop environment including Office 365, Exchange/Email,

Sr. System Administrator- Network Operations Center-Job Title - Sr. System Administrator- Network Operations Center-

RTX CorporationCompany Name - RTX Corporation

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Springfield, Virginia, USA

Full-time

Date Posted: 2025-05-15 Country: United States of America Location: VA141: 8350 Alban Road, Springfield 8350 Alban Road Suite 700, Springfield, VA, 22150 USA Position Role Type: Onsite U.S. Citizen, U.S. Person, or Immigration Status Requirements: Active and transferable U.S. government issued security clearance is required prior to start date.Security Clearance: TS/SCI with CI Poly - Current Sr. System Administrator- Network Operations Center-Springfield, VA, must have active TS/SCI CI Poly

Network/System Administrator (Net/Sys Admin) IIIJob Title - Network/System Administrator (Net/Sys Admin) III

General DynamicsCompany Name - General Dynamics

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Bedford, Massachusetts, USA

Full-time

Type of Requisition: Regular Clearance Level Must Currently Possess: Top Secret/SCI Clearance Level Must Be Able to Obtain: Top Secret SCI + Polygraph Public Trust/Other Required: None Job Family: Network Administration Job Qualifications: Skills: Network Administrator, Network Architecture, Network Engineering Certifications: None Experience: 5 + years of related experience ship Required: Yes Job Description: Network/System Administrator (Net/Sys Admin) The primary function will be to

System Administrator 2 (SA2)Job Title - System Administrator 2 (SA2)

Realm OneCompany Name - Realm One

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Annapolis, Maryland, USA

Full-time

We're searching for talented individuals who provide intelligence, engineering, and mission management expertise for the Government. This program will maximize the effectiveness and efficiency of our country's most important missions both at home and abroad. If you are ready to support a high-performing team that truly makes a difference, then come join us! Job Description: This position is for System Administration support for development and production environments for a mission-critical Ide

Linux Systems Administrator (Tier I)Job Title - Linux Systems Administrator (Tier I)

American Systems CorporationCompany Name - American Systems Corporation

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Arlington, Virginia, USA

Full-time

Overview AMERICAN SYSTEMS is a 100% employee-owned federal government contractor supporting national priority programs through our strategic solutions in the areas of Information Technology, Test & Evaluation, Program Mission Support, Engineering & Analysis, and Training. Responsibilities As a Tier I Linux Systems Administrator with AMERICAN SYSTEMS you will have the opportunity to do the following: Perform general Systems Administrator functions supporting all HPC users with courteous respons

Senior System AdministratorJob Title - Senior System Administrator

LeidosCompany Name - Leidos

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Orlando, Florida, USA

Full-time

Are you an experienced Senior System Administrator looking for your next challenge? Your search ends here! We have an exciting opportunity for you to support several Programs in the Orlando Area. Your expertise will guide the definition, implementation, and delivery of capability focused on Cyber Training systems and Synthetic Environment Generation. You'll have the chance to work with a broad range of systems, providing overall support for various critical systems. Join our team and make a diff

Senior Windows System AdministratorJob Title - Senior Windows System Administrator

Apex SystemsCompany Name - Apex Systems

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Huntsville, Alabama, USA

Full-time

Job#: 2055724 Job Description: Apex Systems is looking for a Windows Systems Administrator to support one of our largest government clients in Huntsville, AL. This is a permanent, direct-hire opportunity and is supporting a newly awarded, 8 year contract. If interested in this, please send resume and contact information to Tessa Moulds, Professional Recruiter, via Position: Windows Systems Administrator Terms: Permanent, Direct-Hire Location: Huntsville, AL Pay Rate: $130,000 - $150,000 Position

System AdministratorJob Title - System Administrator

SilverEdgeCompany Name - SilverEdge

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Fort Meade, Maryland, USA

Full-time

Overview SilverEdge is a premier provider of innovative cyber, software and intelligence solutions addressing everyday challenges to meet mission goals across the DOD and Intel Communities and beyond. We are seeking a system administrator to join our growing team and support our partners on a mission focused program. Demonstrated knowledge of analytical needs and requirements, query syntax, data flows, and traffic manipulation. Meet one of the following two skill sets: Skill set one: program

Network System AdministratorJob Title - Network System Administrator

ManTechCompany Name - ManTech

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Los Angeles, California, USA

Full-time

ManTech seeks a motivated, career and customer-oriented Network System Administrator to join our team in Los Angeles, CA. The primary function is working with Special Access Program (SAPs) and other classified networks supporting SMC Directorates and/or AFSPC Operational Units. The position will provide "day-to-day" support for Collateral, Sensitive Compartmented Information (SCI) and Special Access Program (SAP) activities. Responsibilities include but are not limited to: Install, maintain,

Eco System Administrator/Dev/Sec/OpsJob Title - Eco System Administrator/Dev/Sec/Ops

SAICCompany Name - SAIC

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Grand Forks, North Dakota, USA

Full-time

Job ID: 2505680 Location: GRAND FORKS, ND, US Date Posted: 2025-05-22 Category: Information Technology Subcategory: Sys Administrator Schedule: Full-time Shift: Day Job Travel: No Minimum Clearance Required: TS/SCI Clearance Level Must Be Able to Obtain: None Potential for Remote Work: No Description This position is in Grand Forks, North Dakota Make a difference for national security by joining a team of dedicated professionals in supporting the Space Development Agency (SDA) in deve

IT Linux Systems Administrator - Top Secret ClearanceJob Title - IT Linux Systems Administrator - Top Secret Clearance

SpaceXCompany Name - SpaceX

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Hawthorne, California, USA

Full-time

SpaceX was founded under the belief that a future where humanity is out exploring the stars is fundamentally more exciting than one where we are not. Today SpaceX is actively developing the technologies to make this possible, with the ultimate goal of enabling human life on Mars. IT LINUX SYSTEMS ADMINISTRATOR - TOP SECRET CLEARANCE SpaceX is looking for an experienced Systems Administrator with deep knowledge and broad experience across Linux-based technologies and application support. The id